one of our customers has the issue, that copying/downloading of archive files brings mcshield.exe to nearly to 100% cpu usage and the client does not respond after some time.

Edit: Especially, when archive-scanning is enabled ... but also it consumes a lot of ressources without.

We use ePO 5.3.3, Agent 5.5, VSE 8.8 P11.

We tested:- Uninstall of Agent and VSE, restart, new installation of agent and VSE- Different client-machines- Disabling archive-scan (which made it better)

If an Office-Installation folder (no iso, just files) is copied from a server-share to a local directory,McShield starts going crazy. Same with larger .zip archives (2-5GB) and same with downloadsof large .zip-files (internet). The copy-process then "hangs" forever.

If scanning of archives is disabled on the client-side (while copying or before), everything is better,but really good. CPU usage is still high.

Server(s) and clients are no "potatoe-machines".

Side notes:- Maximum scan time is not enforced- Artemis is "very low"- Scan on network drives is disabled- Read/Write scan is enabled

For the moment, we disabled archive scanning and decoding of MIME encoded files, whichis a small workaround but no sollution, because that's just one part of the issue.

Edit2: Same issue with VSE 8.8 P11 and Agent 5.0.6 (another customer). Just copied some smallerZIP-Archives (McAfee VSE Installation Archives) from a server to another. Archive-Scan disabled. McShield has also afterwards for a couple of time nearly 50% CPU usage.

Does anyone have the same issues and/or some good hints?I never saw this in such an extreme form in the past. Most of our customers run VSE 8.8 P10 andWin7/10 (1709) with Agent 5.0.6 and do not have this kind of issues...

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